Lantern-slide-moving device.



J. LBOPOLD. LANTERN SLIDE MOVING DEVICE.-

APPLIOATION FILED MAX 9, 1911.

Patented Aug. 29, 1911 I mums-sum 1.

. INVENTOR 4: BY j' I 4170mm v "Iii-I /a w J. LEOPOLD.

LANTERN SLIDE MOVING DEVICE. APPLIUATION FILED MAY 9; 1911 Patented Aug.29, 1911.

2 sums-51mm z.-

WITNESSES mm f tnvmnn s'rarns PATENT ornicn.

JOSEPH LEOPOLD, OF SOUTH BETHLEHEM, PENNSYLVANIA.

.LANTERN-SLIDE-MOVING DEVICE.

Specification of Letters Patent. Patented Aug; 299, 1911, Applicationfiled Ma 9, 1911. Serial No. 625,940.

To all whom it may concern:

Be it known that I, Josnrn LEOPOLD, a subject of the King of Hungary,and resident of South Bethlehem, in the county of Northampton .and Stateof Pennsylvania, have invented certain new and useful Improvements inLantern- Slide-Moving Devices, of which the following is aspecification. Y

or other person may cause a series of slides or views to beautomaticallybrought into operative relation with and removed from.

the source of light and the objective of the stereopticon.

One of the objects of the invention is to provide a simple and cheapdevice of. this class, which can be easily handled and which isefiicient in its operation.

Another object of the invention is to con struct, an apparatus of thisclass having a storage vessel, into which the slides or views areautomatically. placed after the pictures thereon have been thrown onthe. screen.

A further object of the invention is to devise a multiple shuttermechanism which is automatically drawn in front of the opening throughwhich the ictures are pro ected during a changing o the slides or views.

With these and other objects in view, which will'appear as the nature ofthe invention is better understood, the same consists in thecombination, arrangement and construction of parts hereinafter fully described, pointed out in the appended claims and illustrated in theaccompanying drawings, it being-understood that many changes may be madein the size and pro ortion of the several parts and minor details ofconstruction without departing from the spirit or sacrificing anyof theadvantages of the invention.

One of the many possible embodiments of the invention is illustrated inthe accompanying drawin s, in which Figure 1 is a ront elevation of alantern slide moving device constructed in accordance with thepresentinvention; Fig.2 is a rear elevation thereof; Fig. 3 is a section takenon 'line'3--3 of Fig. 2; Fig. 4 is a section taken on line 44' of Fig.2; Figs. 5 and 6 are front elevations-of the shutters of the device; andFig. 7 is a side elevation of the The present invention relates to anappa-' rates to be used with stereopticons or like lanterns, and bymeans of which a lecturer ets or bearings 40,

In the drawings, the numeral 10 designates-a base plate, upon which ismounted a lantern 11, of any suitable type, and the objective 12 of thestereopticon. Between the.

lantern and the objective is arranged a substantially vertical frame 13,comprising a plate member having an opening 14, wh ch is of a size toaccommodate a slide 15. Theframe 13 is mounted upon standards or legs16, which are attached tothe base plate 10. 'The slides 15 are placedinto a receptacle 17 which is fastened to the rear of the frame 13, andcomprises a slanting bottom 18, sides 19, the upper edges 20 of whichrun substantially parallel with the inclined bottom 18, and an end 19'.The. slides arelocated in this receptacle insubstantially verticalpositions, and in the rear of the series of slides is placed upon theinclined edges 20 of the sides 19 of the receptacle a roller 21, whichwill cause the slides to move, one after the other, into the opening 14of the frame 13,so that their pictures can be thrown upon a screen inthe usual -manner. The

frame 13 is provided upon its upper vend with a cross strip 22 and alongthe vertical edges of the opening 14 with the vertical strips 23, 23,which latter project over the edges of the opening a little distancetoward the vertical center line of the opening 14,

and provide thereby a guideway for the slides, preventing at the sametime an outward movement of said slides relative to the plate 13. To theframe 13 are furthermore attached two vertical posts 24:, 24, on whichis slidably arranged a feeding plate 25,

adapted to project into the guideway for the slides. The feeding platehas an upwardly extending lug 26, which is pivoted at 27 to a bellcranklever 28,the latter being fulcrumed at 29 to a vertical standard30,wh1ch 1s secured to the frame 13. The other end of the bellcranklever 28 is pivotally fastened at 31 to one end. of a bar 32, the otherslotted end 33 of which is engaged by a pin 34, carried by a lever 35."This 181761115 fiaedly attached to a spindle 36, which is oscillatablymounted in the frame 13 and provided with an operating handle 37.

Near-to the lower and upper ends of the opening 14 are oscillatablyarranged two shafts 38 and '39.,suitably journaled in brack- 4:0,andcarrying at their inner ends pmions i1 and-a2, respectively,

which mesh with gear segments 43 and 44,- respectively. 'Theshafts ofthese segments spectively, which lugs extend through a distures 62 and63, respectively, the sizes of tance which corresponds to about thewidth of the opening 14 in the frame 13.

The shutter mechanism, which is automatically operated to close theopening 14 during the changing of the slides or views, comprises twoframes 59 and 60, which are slidably arranged one behind the other inguides 61, 61, which latter are attached in any suitable manner to, theframe 13. The frames 59 and 60 are provided with aperwhich correspond tothe size of the opening 14. In these frames are furthermore arrangedcolored glass plates and 66, respectively. To the frames 59 and 60 arepivoted bars 67 and 68, the other ends of which are in a similar mannerattached at 69 and 70, respectively, to a lever 71, which is rigidlyattached to the spindle 36. These two shutters are mounted in the guides61 in such a manner and the relations of their apertures and glassplates are such that the apertures 62 and 63 register with the openmg 14when the operating handle 37 is in its extreme left-hand position (Fig.1). The two colored glass plates 65 and 66, on the other hand, close theopening 14 when the operating handle 37 is shifted toward the right. Theglass plates 65 and 66 slide toward each other in closing the opening14, so that the picture upon the screen will gradually disappear,whereby the unpleasant effect on. the audience, due to the movement ofthe view-on the screen, is avoided.

The slides, when discharged from the apparatus, fall into a vessel 72,which is mounted upon rollers 73, traveling upon rails 74, which latterare attached to the base plate 10 of the apparatus. As the slides oneafter the other drop in substantially vertical positions into thevessel, it is necessary to move the latter gradually toward the lantern11. The mechanism for effecting this movement comprises a lever 75,fixedly attached to the oscillating spindle 36. and connected by meansof a pin 76 which operates in a slot 77 of a bar 78 with the latter. Thebar 78 is pivoted at 79 to atwo armed lever 80, fulcrumed at 81 to oneof the standards 16. This lever engages a pawl 82, pivoted at 83 to astandard 84, which isv attached to the base plate 10. The pawl meshes'with a ratchet wheel 85, upon the shaft 86 of which Springs 55 and 56'57 of the bar 38.

is mounted a pinion 8'7, meshing with a rack 88 which latter is fastenedto one of the si es of the vessel 72.

The operation of the device is as follows: A series of slides 15,containing the pictures of the set, .is put with the pictures upsidedown in the receptacle 17, and the roller 21 placed upon the inclinedsides of the receptacle in the rear of said slides." When the parts arein the position shown in Fig. 1 of the drawings, the lug 57 upon the bar38 is held in its vertical osition, as clearly shown in Fig. 1 of therawi gs. The ing 58 of the bar 39 is in this sition arran edhorizontally and supports one of the sli es, and the apertures 62 and 63in the frames 59 and 60 register with the o ening 14 in the frame 13.The picture is t 1us thrown onto the screen. When it is intended todisplay another picture, the operating handle 37 is shifted to itsextreme right-hand position, whereby the feeding plate 25 will be liftedinto the position shown in Figs. 2 and 3 of the drawings. In doing this,as soon as the shifting of the handle is commenced, the spring 55, whichis in its extended position when the arts are in the positions shown inFig. 1, Wlll oscillate the gear segment 43, which in turn will oscillatethe shaft 38 so that the lug 57 of this shaft will be brought into itshorizontal osition, and at the same time the bar 50 Wlll oscillate thegear segment '44, whereby the lug 58 of the bar 39 will be brought intoits vertical position, thus releasing the slide which had been heldthereby in the opening 14 of the apparatus. This slide falls into thevessel 72. The shifting of the lever 37 forces at the same .time

the shutter frames 59 and 60 into the posi-.

tions shown in Fig. 2 of the drawings, the colored glass plates 65 and66 gradually covering each other until they shut fully the opening 14,whereby the downwardmovement of the picture on the screen cannot be seenby the audience. As soon as the feeding plate 25 is withdrawn from theguideway for the slides, the roller 21 is free to act and will therebyfeed a slide into said guide- Way on the now horizontally arranged 111gThe operating handle 37 is then shifted back to its normal positionshown in Fig. 1 of the drawings, whereby, as its movement is started,the spring 56 will immediately force the lug 58 into its horif zontalposition, while the connection between the spindle 36 and the gear 43will bring the lug 57 mto' its vertical position, releasing thereby theslide thereon. By a further movement of the operating handle, thefeeding plate causes the slide to move onto the now horizontallyarranged lug 58. At the same time, of course, the frames 59 and 60 areshifted so that their apertures 62 and 63 register with the opening 14in the'plate pr g 1,3 permlttlng e picture to "be thrownonto the screen.The pawl 82 is also actuated by this movement of the operating handle37, and thereby the receptacle 72 advanced intoa position to receive thenext 5 slide. It is thus apparent that, to change the views, it is onlynecessary for the operato'r to shift the operating handle 37 once to theright and back to the left.

lVhat I claim is a 1. In an apparatus .of the character de-v scribed,the combination with a frame including a vertical plate having anopening therein through which the-views are thrown on a screen,guideways .forlthe slides along the vvertical edges of said opening, arecep tacle for the slides rovided with means for automatically feedlngthe slides into said guideways, oscillatable holding means for theslides above and below said opening, a

reciprocatable feeding plate forforcing' the slides in. said guidewaysonto the lower holding ating slmultaneously said feedingplate and saidholding means, substantially as specie 2. Inan apparatus of thecharacter described, the combination with a frame including a verticalplate having an opening therein through which the views are'thrown on ascreen, guideways for the, slides along the vertical edges of saidopening, a recepa tacle for the'slides having an inclined bottom andbein provided with means for automatically feeding the slides into saidguideways, holding means for the slides- 40 said feeding plate and saidholding means,

substantially as specified. 3. In an apparatus of the characterdescribed, the combination. with a frame in-- cluding a verticalplatehaving an opening therein through which the viewsare thrown on ascreen, guideways for-the slides along the vertical edges of saidopening, a recep- ,tacle for the slides having an inclined bottom andbeing provided with a means for automatically feeding the slides intosaid guideways, oscillatable holding means forthe slides above and belowsaid opening, a reciprocatable feeding plate for forcing the slides insaid guideways onto the lower holding means, and a mechanism foroperating simultaneously said feeding plate and said holding means,substantiallyas specified.

4. In an apparatus of the character described, the combination with aframe including a vertical plate having an opening therein through.Whlch the views are thrown on a'screen, guideways for the sl des alongthe vertical edges of said opening, a recep-.

6 tacle for the slides provided with means-for means, and a mechanismfor operautomatically feeding the slides into said guide'ways, holdingmeans for the slides above and below said opening, a feeding plate forforcing the slides in said guideways onto the lower holding means, ashutter mechanism adapted to close the opening in said plate, and amechanism for operating simultaneously said feeding plate, said holdingmeans and said shutter mechanism, substantially as specified. s

5. In an apparatus of the class described, the combination with a frameincluding a vertical plate having an opening therein through which theviews a1- thrown on a screen, guideways forth slides along the verticaledges of said opening, a receptacle for the slides provided with meansfor antomatically feeding the slides into said guideways, oscillatableholding means for the slides above and below said opening, a

reciprocatable feeding. plate for forcing the slides in said guidewaysonto the. lower holding means, a shutter mechanism adapted to close theopening in said plate, and a mechanism for operating simultaneously saidfeeding plate,'said holding means and said' shutter mechanism,substantially as specified.

6. In an apparatus of the character described, the combination with aframe including a vertical plate having an opening therein through whichthe views are thrown on ascree'n, guideways for theslides along theverticaledgesof said opening, a receptaclefor the shdes having aninclined bot- .tom and bein provided with means for automaticallyfeeding the slides into said guideways, holding means for the slidesabove and below said opening, a feeding plate, for forcing the slides insaid guideways onto the lower holdin means, a shutter mechanism adaptedto c ose the opening in said plate, and a mechanism for operatingsimultaneously said feeding plate, said holding means and said shuttermechanism, substantially as specified.

7 In an apparatus ofthe class described,

the combination with a frame includinga vertical plate having an openingthereln through which the vlews are thrown on a screen, guideways forthe slides along the vertical edges of said 0 ening, a receptacle forthe slides having an inclined bottom and being provided with means forautomatically feeding the slides into said guideways,foscillat ableholding means for the slides aboveand below said openin a re-.ciprocatable feeding plate for forcing the slides in said guidewaysonto the lower holdin means, a shutter mechanism adapted to c ose theopening in said plate, and a mechanism for; operating simultaneouslysaid feeding plate, said' holding means and said shutter "mechanism,substantially as 8. In an apparatus of the character described, thecombination with a frame including a vertical plate having an openingtherein through WhlCh the views are thrown on a screen, guideways forthe slides along the vertical edges of said opening, a receptacle forthe slides rovided with means for automatically feedlng theslides intosaid guideways, holding means for the slides ter mechanism comprisingtwo frames hav ing apertures adapted to register ithsaid opening andcolored glass plates adapted to close said opening, and a mechanism for'operating simultaneously said feeding plate, said holding means andsaid shutter mechanism, substantially as specified.

Signed at South Bethlehem, in the county of Northampton and State ofPennsylvania, this 4th day of May A. D. 1911.

JOSEPH LEOPOLD. Witnesses:

SIMON Dnzso, D. B. ESCUTERIZ.

